git.zerfleddert.de Git - micropolis/blob - src/sim/s_disast.c

   1 /* s_disast.c
   2  *
   3  * Micropolis, Unix Version.  This game was released for the Unix platform
   4  * in or about 1990 and has been modified for inclusion in the One Laptop
   5  * Per Child program.  Copyright (C) 1989 - 2007 Electronic Arts Inc.  If
   6  * you need assistance with this program, you may contact:
   7  *   http://wiki.laptop.org/go/Micropolis  or email  micropolis@laptop.org.
   8  *
   9  * This program is free software: you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation, either version 3 of the License, or (at
  12  * your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.  You should have received a
  18  * copy of the GNU General Public License along with this program.  If
  19  * not, see <http://www.gnu.org/licenses/>.
  20  *
  21  *             ADDITIONAL TERMS per GNU GPL Section 7
  22  *
  23  * No trademark or publicity rights are granted.  This license does NOT
  24  * give you any right, title or interest in the trademark SimCity or any
  25  * other Electronic Arts trademark.  You may not distribute any
  26  * modification of this program using the trademark SimCity or claim any
  27  * affliation or association with Electronic Arts Inc. or its employees.
  28  *
  29  * Any propagation or conveyance of this program must include this
  30  * copyright notice and these terms.
  31  *
  32  * If you convey this program (or any modifications of it) and assume
  33  * contractual liability for the program to recipients of it, you agree
  34  * to indemnify Electronic Arts for any liability that those contractual
  35  * assumptions impose on Electronic Arts.
  36  *
  37  * You may not misrepresent the origins of this program; modified
  38  * versions of the program must be marked as such and not identified as
  39  * the original program.
  40  *
  41  * This disclaimer supplements the one included in the General Public
  42  * License.  TO THE FULLEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW, THIS
  43  * PROGRAM IS PROVIDED TO YOU "AS IS," WITH ALL FAULTS, WITHOUT WARRANTY
  44  * OF ANY KIND, AND YOUR USE IS AT YOUR SOLE RISK.  THE ENTIRE RISK OF
  45  * SATISFACTORY QUALITY AND PERFORMANCE RESIDES WITH YOU.  ELECTRONIC ARTS
  46  * DISCLAIMS ANY AND ALL EXPRESS, IMPLIED OR STATUTORY WARRANTIES,
  47  * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, SATISFACTORY QUALITY,
  48  * FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT OF THIRD PARTY
  49  * RIGHTS, AND WARRANTIES (IF ANY) ARISING FROM A COURSE OF DEALING,
  50  * USAGE, OR TRADE PRACTICE.  ELECTRONIC ARTS DOES NOT WARRANT AGAINST
  51  * INTERFERENCE WITH YOUR ENJOYMENT OF THE PROGRAM; THAT THE PROGRAM WILL
  52  * MEET YOUR REQUIREMENTS; THAT OPERATION OF THE PROGRAM WILL BE
  53  * UNINTERRUPTED OR ERROR-FREE, OR THAT THE PROGRAM WILL BE COMPATIBLE
  54  * WITH THIRD PARTY SOFTWARE OR THAT ANY ERRORS IN THE PROGRAM WILL BE
  55  * CORRECTED.  NO ORAL OR WRITTEN ADVICE PROVIDED BY ELECTRONIC ARTS OR
  56  * ANY AUTHORIZED REPRESENTATIVE SHALL CREATE A WARRANTY.  SOME
  57  * JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF OR LIMITATIONS ON IMPLIED
  58  * WARRANTIES OR THE LIMITATIONS ON THE APPLICABLE STATUTORY RIGHTS OF A
  59  * CONSUMER, SO SOME OR ALL OF THE ABOVE EXCLUSIONS AND LIMITATIONS MAY
  60  * NOT APPLY TO YOU.
  61  */
  62 #include "sim.h"
  63
  64
  65 /* Disasters */
  66
  67
  68 short ShakeNow;
  69 short FloodCnt;
  70 short FloodX, FloodY;
  71
  72 void SetFire(void);
  73 int Vunerable(int tem);
  74 void ScenarioDisaster(void);
  75
  76 /* comefrom: Simulate */
  77 void
  78 DoDisasters(void)
  79 {
  80   /* Chance of disasters at lev 0 1 2 */
  81   static short DisChance[3] = { 10*48, 5*48, 60};
  82   register short x;
  83
  84   if (FloodCnt) FloodCnt--;
  85   if (DisasterEvent)
  86     ScenarioDisaster();
  87
  88   x = GameLevel;
  89   if (x > 2) x = 0;
  90
  91   if (NoDisasters) return;              /*post*/
  92   if (!Rand(DisChance[x])) {
  93     x = Rand(8);
  94     switch (x) {
  95     case 0:
  96     case 1:
  97       SetFire();
  98       break;
  99     case 2:
 100     case 3:
 101       MakeFlood();
 102       break;
 103     case 4:
 104       MakeAirCrash();
 105       break;
 106     case 5:
 107       MakeTornado();
 108       break;
 109     case 6:
 110       MakeEarthquake();
 111       break;
 112     case 7:
 113     case 8:
 114       if (PolluteAverage > /* 80 */ 60) MakeMonster();
 115       break;
 116     }
 117   }
 118 }
 119
 120
 121 /* comefrom: DoDisasters */
 122 void
 123 ScenarioDisaster(void)
 124 {
 125   switch (DisasterEvent) {
 126     case 1:                     /* Dullsville */
 127       break;
 128     case 2:                     /* San Francisco */
 129       if (DisasterWait == 1) MakeEarthquake();
 130       break;
 131     case 3:                     /* Hamburg */
 132       DropFireBombs();
 133       break;
 134     case 4:                     /* Bern */
 135       break;
 136     case 5:                     /* Tokyo */
 137       if (DisasterWait == 1) MakeMonster();
 138       break;
 139     case 6:                     /* Detroit */
 140       break;
 141     case 7:                     /* Boston */
 142       if (DisasterWait == 1) MakeMeltdown();
 143       break;
 144     case 8:                     /* Rio */
 145       if ((DisasterWait % 24) == 0) MakeFlood();
 146       break;
 147   }
 148   if (DisasterWait) DisasterWait--;
 149   else DisasterEvent = 0;
 150 }
 151
 152
 153 /* comefrom: ScenarioDisaster */
 154 void
 155 MakeMeltdown(void)
 156 {
 157   short x, y;
 158
 159   for (x = 0; x < (WORLD_X - 1); x ++) {
 160     for (y = 0; y < (WORLD_Y - 1); y++) {
 161       /* TILE_IS_NUCLEAR(Map[x][y]) */
 162       if ((Map[x][y] & LOMASK) == NUCLEAR) {
 163         DoMeltdown(x, y);
 164         return;
 165       }
 166     }
 167   }
 168 }
 169
 170
 171 void
 172 FireBomb(void)
 173 {
 174   CrashX = Rand(WORLD_X - 1);
 175   CrashY = Rand(WORLD_Y - 1);
 176   MakeExplosion(CrashX, CrashY);
 177   ClearMes();
 178   SendMesAt(-30, CrashX, CrashY);
 179 }
 180
 181
 182 /* comefrom: DoDisasters ScenarioDisaster */
 183 void
 184 MakeEarthquake(void)
 185 {
 186   register short x, y, z;
 187   short time;
 188
 189   DoEarthQuake();
 190
 191   SendMesAt(-23, CCx, CCy);
 192   time = Rand(700) + 300;
 193   for (z = 0; z < time; z++)  {
 194     x = Rand(WORLD_X - 1);
 195     y = Rand(WORLD_Y - 1);
 196     if ((x < 0) || (x > (WORLD_X - 1)) ||
 197         (y < 0) || (y > (WORLD_Y - 1)))
 198       continue;
 199     /* TILE_IS_VULNERABLE(Map[x][y]) */
 200     if (Vunerable(Map[x][y])) {
 201       if (z & 0x3)
 202         Map[x][y] = (RUBBLE + BULLBIT) + (Rand16() & 3);
 203       else
 204         Map[x][y] = (FIRE + ANIMBIT) + (Rand16() & 7);
 205     }
 206   }
 207 }
 208
 209
 210 /* comefrom: DoDisasters */
 211 void
 212 SetFire(void)
 213 {
 214   register short x, y, z;
 215
 216   x = Rand(WORLD_X - 1);
 217   y = Rand(WORLD_Y - 1);
 218   z = Map[x][y];
 219   /* TILE_IS_ARSONABLE(z) */
 220   if (!(z & ZONEBIT)) {
 221     z = z & LOMASK;
 222     if ((z > LHTHR) && (z < LASTZONE)) {
 223       Map[x][y] = FIRE + ANIMBIT + (Rand16() & 7);
 224       CrashX = x; CrashY = y;
 225       SendMesAt(-20, x, y);
 226     }
 227   }
 228 }
 229
 230
 231 /* comefrom: DoDisasters */
 232 void
 233 MakeFire(void)
 234 {
 235   short t, x, y, z;
 236   for (t = 0; t < 40; t++)  {
 237     x = Rand(WORLD_X - 1);
 238     y = Rand(WORLD_Y - 1);
 239     z = Map[x][y];
 240     /* !(z & BURNBIT) && TILE_IS_ARSONABLE(z) */
 241     if ((!(z & ZONEBIT)) && (z & BURNBIT)) {
 242       z = z & LOMASK;
 243       if ((z > 21) && (z < LASTZONE)) {
 244         Map[x][y] = FIRE + ANIMBIT + (Rand16() & 7);
 245         SendMesAt(20, x, y);
 246         return;
 247       }
 248     }
 249   }
 250 }
 251
 252
 253 /* comefrom: MakeEarthquake */
 254 int
 255 Vunerable(int tem)
 256 {
 257   register int tem2;
 258
 259   tem2 = tem & LOMASK;
 260   if ((tem2 < RESBASE) ||
 261       (tem2 > LASTZONE) ||
 262       (tem & ZONEBIT))
 263     return(FALSE);
 264   return(TRUE);
 265 }
 266
 267
 268 /* comefrom: DoDisasters ScenarioDisaster */
 269 void
 270 MakeFlood(void)
 271 {
 272   static short Dx[4] = { 0, 1, 0,-1};
 273   static short Dy[4] = {-1, 0, 1, 0};
 274   register short xx, yy, c;
 275   short z, t, x, y;
 276
 277   for (z = 0; z < 300; z++) {
 278     x = Rand(WORLD_X - 1);
 279     y = Rand(WORLD_Y - 1);
 280     c = Map[x][y] & LOMASK; /* XXX: & LOMASK */
 281     /* TILE_IS_RIVER_EDGE(c) */
 282     if ((c > 4) && (c < 21))            /* if riveredge  */
 283       for (t = 0; t < 4; t++) {
 284         xx = x + Dx[t];
 285         yy = y + Dy[t];
 286         if (TestBounds(xx, yy)) {
 287           c = Map[xx][yy];
 288           /* TILE_IS_FLOODABLE(c) */
 289           if ((c == 0) || ((c & BULLBIT) && (c & BURNBIT))) {
 290             Map[xx][yy] = FLOOD;
 291             FloodCnt = 30;
 292             SendMesAt(-42, xx, yy);
 293             FloodX = xx; FloodY = yy;
 294             return;
 295           }
 296         }
 297       }
 298   }
 299 }
 300
 301
 302 /* comefrom: MapScan */
 303 void
 304 DoFlood(void)
 305 {
 306   static short Dx[4] = { 0, 1, 0,-1};
 307   static short Dy[4] = {-1, 0, 1, 0};
 308   register short z, c, xx, yy, t;
 309
 310   if (FloodCnt)
 311     for (z = 0; z < 4; z++) {
 312       if (!(Rand16() & 7)) {
 313         xx = SMapX + Dx[z];
 314         yy = SMapY + Dy[z];
 315         if (TestBounds(xx, yy)) {
 316           c = Map[xx][yy];
 317           t = c & LOMASK;
 318           /* TILE_IS_FLOODABLE2(c) */
 319           if ((c & BURNBIT) ||
 320               (c == 0) ||
 321               ((t >= WOODS5 /* XXX */) && (t < FLOOD))) {
 322             if (c & ZONEBIT)
 323               FireZone(xx, yy, c);
 324             Map[xx][yy] = FLOOD + Rand(2);
 325           }
 326         }
 327       }
 328     }
 329   else
 330     if (!(Rand16() & 15))
 331       Map[SMapX][SMapY] = 0;
 332 }